alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed VBScript Payload Downloader Inbound"; flow:established,to_client; http.response_body; content:"|3d 3d 3d 20|Obfuscated|20|VBScript|20|Payload|20 3d 3d 3d|"; fast_pattern; content:"|3d 3d 3d 20|Base64|20|Decode|20 26 20|Execute|20 3d 3d 3d|"; distance:0; content:"Function|20|Base64Decode|28|"; distance:0; reference:md5,b24d144f391593cc76cc7cf14449c943; reference:md5,8f72a20b9e69ac927a8cb136b4d92245; classtype:trojan-activity; sid:2065641; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_11_04, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer; target:dest_ip;)